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Vol. 13. Issue 1.
Pages 22-26 (January 2002)
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Vol. 13. Issue 1.
Pages 22-26 (January 2002)
Estudio epidemiológico de los tumores del ángulo pontocerebeloso operados en Maracaibo, Venezuela, durante el lapso 1985–1999
Epidemiological study of the cerebellopontine angle tumors operated in Maracaibo, Venezuela, during the lapse 1985–1999
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G. Arismendi, M. Bohórquez, Z. Romero de Amaro
Departamento de Patología. Hospital General del Sur. Maracaibo. Venezuela
D. Cardozo*,
, G. Luzardo**, O. Molina***, J. Cardozo*
* Departamento de Ciencias Morfológicas. Facultad de Medicina. Universidad del Zulia. Maracaibo. Venezuela
** Department of Surgery. Mayo Clinic. Rochester. MN, USA
*** Servicio de Neurología. Hospital Universitario. Maracaibo. Venezuela
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Resumen
Objetivo

Analizar los datos epidemiológicos, clínicos y neuropatológicos relacionados con los tumores del ángulo pontocerebeloso (APC).

Material y métodos

Se revisaron las historias clínicas, estudios por imágenes y estudios neuropatológicos correspondientes a 50 pacientes con diagnóstico de tumor de APC intervenidos en diferentes hospitales de Maracaibo, Venezuela, entre el Io de enero de 1985 y el 31 de diciembre de 1999. Se recabaron los datos correspondientes a las variables edad, género, lado de la lesión y diagnóstico neuropatológico.

Resultados

Se observó una razón de 2:1 entre el género femenino y el masculino. La media de edad fue de 48+/−12.7 años. Los neuromas acústicos (NA) representaron el 48% de los casos y los tumores no neuromas acústicos (TNNA) el 52%. Los meningiomas fueron segundos en frecuencia, constituyendo el 32% del total. Los Meningiomas y los NA fueron mas frecuentes en mujeres a razón de 7:1 y 1.6:1, respectivamente. El 60% de los casos se presentaron en pacientes correspondientes a las décadas cuarta y quinta.

Conclusiones

La diferencia entre los resultados de nuestra serie y los comunicados previamente a la literatura médica mundial en relación con la incidencia de NA y TNNA en el APC obedece en parte al predominio de pacientes del género femenino en la presente muestra y probablemente al concurso de factores endocrinos, genéticos y bioquímicos, entre otros; sin embargo ello no formó parte de los objetivos del presente estudio.

Palabras clave:
Acústico
Ángulo pontocerebeloso
Colesteatoma
Glioma
Meningioma
Neuroma
Schwannoma
Summary
Objective

To analyze the epidemiological, clinical and neuropathological data of cases of cerebellopontine angle (CPA) tumors.

Material and Methods

The clinical records, neuroimaging and neuropathological studies of 50 patients with diagnosis of CPA tumor operated in different hospitals of Maracaibo, Venezuela, during the lapse January lst, 1985 – December 31,1999 were reviewed. The variables age, gender, side of the lesion and neuropathological diagnosis were analyzed.

Results

A 2:1 female to male ratio was observed. Median age was 48±12.7 years. Acoustic neuromas (AN) represented 48% of the cases, whereas nonacoustic neuroma tumors (NANT) made up for the rest (52%). Meningiomas were the second more commonly diagnosed lesions, they constituted 32% of the cases. Meningiomas and AN were more frequent in women, their ratios being 7:1 and 1.6:1, respectively. In 60% of the cases the signs and symptoms became eloquent in patients of the fourth and fifth decades of life.

Conclusions

The difference between our results and the ones previously reported in the medical literature are due in part to the predominance of female patients in our series. Endocrinologic, genetic and biochemical factors could also be responsible; nevertheless, this does not constitute the objective of the present study.

Key words:
Acoustic
Cerebellopontine angle
Cholesteatoma
Glioma
Meningioma
Neuroma
Schwannoma

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